Wow, interesting. I just had two Seagate 7200.11's die of read errors in our home-built SAN at work. A third drive was also giving read errors, but it was able to correct itself. It has been a long weekend of RAID array death watch. Thankfully the array survived the rebuild. I was able to rescue the two failed drives with Seatools, but not after replacing them with spares (also 7200.11's). The drives report 32500 power on hours. This particular SAN is used by our recording department, almost 100% use for those hours. The building has had several power outages in the last four months, and one rather unfunny restart because I put the SAN in a GPO that it shouldn't have been. Yes, I'm stupid, don't ask. Official report is 'cosmic rays'.
I don't think the power had anything to do with it. The RAID box is solid (Supermicro), the SmartUPS are solid, and the backup generator is also solid.
Anecdotal, uh, notes, I've had countless drives fail over the years. I'm sure it doesn't need to be said, but it's not if, it's when. Hey, I like typing. And of course, rarely when it's convenient. While having a competent IT director is a blessing, maintaining backups and a DR plan is annoying. But it does saves yo ass, mmhm.
The first 'click of death' drive I can recall was a Conner 1.7GB drive I bought at a flea market (it was in a shipping box with a bunch of clones), mid 2000-ish. It died within a week of buying it. Also, it was the first drive I took the lid off and powered it on. Before that I've had MFM, RLL, SCSI, IDE, and now SATA/SAS drives.
The IDE and SATA drives do appear to die more readily. I've also had a lot more experience with IDE and SATA drives in recent years because of work, so that doesn't really give any credo to my experience, just bigger numbers. I have heard that the density on the platters is just about at the maximum, the capacity is coming from better compression and error correction. The Deathstars were a real thing, though, lots of those died (what 10 maybe out of 25 drives purchased) before Hitachi bought the business. Western Digital seems to have a good track record, actually. I'm skeptical of the Reds, but I recently put five of the 2TB models in service for a DAW at another company. They had budgetary limits, otherwise I'd use RE4's. The array has zero use in reality (vacations, waiting on upgrades, etc.), so we shall see.
Sorry for the staccato English. I'm drunk and tired. Cheers.
Calm seas never made a skilled mariner. But, sadly I'm an A's fan.